Finding the Fourth Proportional to 118,772,905.80, 178,159,358.70 and 99,641,029.80
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Solution
The fourth proportional to 118,772,905.80, 178,159,358.70 and 99,641,029.80 is: 149,461,544.70
Step by Step Solution
- Step 1: Write the proportion equation
118,772,905.80 : 178,159,358.70 = 99,641,029.80 : x - Step 2: Convert to fraction form
118,772,905.80/178,159,358.70 = 99,641,029.80/x - Step 3: Cross multiply
118,772,905.80x = 178,159,358.70 × 99,641,029.80 - Step 4: Simplify right side
118,772,905.80x = 17,751,981,969,375,588 - Step 5: Solve for x
x = 17,751,981,969,375,588/118,772,905.80 - Step 6: Final answer
x = 149,461,544.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.